NASA is about to launch a space observatory that could help settle some of the biggest mysteries in modern astronomy. The Nancy Grace Roman Space Telescope will study how the universe began, what it ...

Barnard’s Star hosts four hostile small planets whose unusual chemistry and orbital rhythm reveal how compact planetary systems can form and survive.

This visual journey imagines what Jupiter, Saturn, Uranus, Neptune, and Pluto would look like from the surfaces of their ...

This illustration shows the system around the star CD-35 2722, with the newly found moon-like object at the center. Credit: ESO/M. Kornmesser. Astronomers have found what may be the first convincing ...

A giant planet had been hiding inside one of astronomy’s most closely studied planetary systems, concealed by a bright disk of cosmic dust. Webb revealed Beta Pictoris d through atmospheric traces of ...

NASA's record-breaking New Horizons spacecraft has awoken from a 321-day hibernation in "good health" as it resumes unprecedented science at the solar system's edge.

What has eluded detection so far have been exosatellites: moons orbiting those remote planets. Our solar system is home to a ...

The object about 72 light-years away from Earth could be the first satellite discovered outside our solar system.

A rocky exoplanet 48 light-years from Earth has offered the 'strongest evidence yet' that other planets besides Earth could ...

Scientists are documenting a planetary system in the Milky Way galaxy that is so starkly dissimilar to our own solar system that they are struggling to find ​the proper terminology to describe it.

Observations made with the European Southern Observatory's Very Large Telescope (ESO's VLT) have revealed evidence for a moon-like object in the CD-35 2722 system. Unlike moons in our solar system, ...

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